Sprinkler



FIG. 1 shows a side view of the sprinkler;

FIG. 2 shows a plan view of the sprinkler;

FIG. 3 shows a bottom plan view of the sprinkler;

FIG. 4 shows a rear view of the sprinkler; and,

FIG. 5 shows a front view of the sprinkler. 

The ornamental design for a sprinkler, as shown and described. 